Process of making piston-packing rings.



W. GEISER. PROCESS OF MAKING PISTON PACKING RINGS.

APPLICATION FILED J'AN.1B, 1909.

' Patented Oct. 26, 1909.

'LfSIfgMHHH min Game! a ring t with said ment and then the ring isslipped on a cylin- UNITED STATES PArEN OFFICE.

WILLIAM GEISER, OF NEODESHA, KANSAS.

PROCESS OF MAKING PISTON-PACKING RINGS.

To all whom 'it may concern:

Be it known that I, WILLIAM GEIsER, a citlzen of the United States,residing at *Neodesha, in the county of Wilson and State of Kansas, haveinvented certainnew and useful Improvements in Processes of MakingPiston-Packing Rings, of which the following is a specification.

This invention relates to resilient pistonpacking-rings and the processof making the same has for its object to produce a resilient packingring having overlapping ends and of uniform radius at all points, andwhich externally forms a perfect cylinder, a further object being toevolve a novel method or process for producing such rings.

In the accompanying drawin Figure 1, is a .plan View of a ribbon ofresilient material from which a iston packing ring is adapted to beformed Fig. 2, is a perspective view of a ring formed by bending aribbon of the type shown in Fig. 1, to circular form. Fig. 3, is a sideView showing the ring compressed on a core by a ringshaped wedge. Fig.4, is a view showing the ring clamped in its compressed condition on thecore and mounted in a lathe wherein it may be turned to a perfect circleexternally by means of a cutting tool.

In the production of these. rings, a ribbon 1 of resilient material andproper size is cut at its ends to form tongues 2'and recesses 3 formutual engagement, the adjacent side edges of such tongues being lanedso as to form an absolutely perfect joint when fitted together. Theribbon is then rolled to form laned edges in engagedrical core 5corresponding in diameter to the part upon which the said ring isadapted to be-ultiinately secured, the core being preferably formed withan integral shoulder 6 against which the ring hears. it sleeve? ofsuitable internal diameter is then driven over the ring to'cornpress itto the required extent, and while thus compressed inwardly by thesleeve, longitudinal pressure is applied upon the tang to clamp the sameagainst the shoulder of the core to prevent the expansion of said ring;said means for applying longitudinal pressure upon the ring being acollar 8 by preference, whichcollar is slipped upon the core, andsecured rigidly- Specification of Letters Patent.

held under compression on the coreis placed with the latter in a lathe10 and turned down by a tool 11 until the periphery ofthe ring is aperfect circle of the required size. By this method or process anabsolutely perfect ring may be produced from a single piece of resilientmaterial with the tongues forming a perfect joint and of any desired lapor shape.

Heretofore rings have sometimes been made from sections of perfectlycircular tubes, the sections being cut or slit from one edge to theother and then filed or otherwise cut to produce tongues or recesses formutual engagement, the rings being then compressed so as to cause thetongues to overlap. A ring of this character does not form a true orperfect circle as it must be distorted in order to cause the ends of thetongues to overlap, it being obvious that the ends of such tongues mustbe coincidental to form a perfect circle if the ring is produced from asection of tubing. Another method of making packing rings is to cut aPatented Oct. 26, 1909. Application filed January 18, 1909. SerialNo.473,005.

circumferential slot in the ring parallel with its sides and then cutthrough the portions of the ring at opposite ends of the slot fromopposite sides of the ring. By this method not engage and make a perfectjoint, and to accomplish this without twisting, a strip of metal isfitted in the slot as a filler, the securing of the extra strip or pieceinthe slot materially increasing the expense of the ring andfacilitating its deterioration.

From the above description it will be apparent that l have evolved anovel method or process for manufacturing initially-perfect resilientpacking rings at small cost, it being understood that a number. of suchringscan be compressed-and turned at the same time. All other packingrings of which I have knowledge made from a single piece of resilientmaterial with overlapping ends fitted together to make a fluid-tightjoint, are initially imperfect and become perfect by wear afterconsiderable service.

-at I claim and desire to secure by Letters-Patent is r l. The processof making resilient-rings, the same consisting in forming recesses andton es at the opposite ends of a ribbon of 'resi ient material, thenplaning the side edges of the tongues so that when fitted toengage withthe tongues overlapping and their planed edges fitted together.

. 2. The process of making resilient rings, the same consisting informing recesses and ton es at the opposite ends of a ribbon of resiient material, then planing the side edges of the ton es so that whenfitted together they shall orm a fluid-tight joint, then rolling theribbon to ring form to cause the tongues and recesses to mutually engagewith the ton ues overlappin and then planed edges tted together, t ensli ping the rin on a cylindrical core of pre etermined iameter, thencompressing the ring until it is reduced to the size desired, then insecuring the ring in its reduced condition, and then in placing the coreand ring in a lathe and turning the ring down until its periphe is ofredetermined diameter and is a e ect circl ef I 3.- he process of makingresilient rings,

and same consisting in forming recesses andton es at the op osite endsof a ribbon of res' ient materia then planing the side ed es of the tones so that when fitted toget er they sha form a fluid-tight joint, thenrolling the ribbon to ring-formto cause the ton es and recesses tomutually en age with t e ton es ,overlappin and t on planed edges ttedtogether, t en sli ping the ring on a cylindrical core of pre eter-Witnesses:

mined I diameter, then compressing until it is reduced to, the requirerin to clamp it in itscompressed condition, an then in turning said rmgdown until its periphery is a perfect circle of predetermined diameter.

the same consisting in forming recesses and ton ues at the 0p osite endsof a ribbon of resi ient materia then planing the side edges of the toes so that when fitted together they sha .form a fluid-tight joint, thenrolling the ribbon to ring f orm to cause the ton es and recesses tomutually engfge with t e. ton es overlapping and t e1r planed edges ttedtogether, t en $1 the rin on a cylindrical core of pre eterminediameter, then driving a-sleeve .ove'r the ring and core to com ress theformer, then in applyinglongitu inal compression 1 on the ring to retainit in such condition,

then in removing the sleeve, and then in placing the core and ring'inalathe and turnin the ring down unt1l its periphery is of re etermineddiameter and is a perfect c1 e.

in the presence of two witnesses.

WILLIAM enrsnn. a

G. 0. 19mm, A. E. Lane.

said ring, size, then in applying longitudinalpressure on the v 4. Theprocess of making resilient In testimony whereof I aflixpmy. signature,

